80-90 percentile in JEE Main 2024 will roughly translate to a rank between 1,50,000 to 3,00,000. Here is the previous year cutoff for B.Tech admission at IIIT Delhi to give you a basic idea of the cutoff trends (for general category)-

JEE MAIN cutoff 2023 for B.Tech admission at IIIT Delhi (General Category)

As evident from the table, the JEE Main cutoff at IIIT Delhi is quite high (between 5,489-10,141 for OS candidates, and 8,416-30,593 for HS candidates). Therefore, it is unfortunately highly unlikely for you to get an admission into IIIT Delhi for a B.Tech program with 90 percentile in JEE Main 2024. This is especially true if you are a general category candidate.